feat: move to iframe for changelog (#1388)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

- **New Features**
- Changelog modal now displays changelog documentation within an
embedded iframe if a URL is available, allowing navigation within the
iframe and providing a "Back to Changelog" button to return to the
original view.
- "View on Docs" button dynamically updates to reflect the current page
within the iframe.
- Added support for displaying a formatted changelog string and testing
modal behavior with or without this content.
- Introduced a new component to fetch, parse, and render changelogs from
URLs with enhanced markdown handling.
- Update OS store extended to manage changelog display and release
stability, consolidating changelog state and actions.

- **Bug Fixes**
  - Close button in modal dialogs is now visible on all screen sizes.

- **Chores**
- Updated the default server state, which may affect registration device
counts and types.
- Added new localization string for changelog titles with version
placeholders.
- Removed deprecated changelog store and related tests, simplifying
state management.
- Refined backup and restoration scripts for unraid-components directory
to use move operations with improved logging.
- Improved modal visibility state handling by consolidating changelog
modal controls into the main update OS store.
- Added URL origin and pattern checks for changelog iframe navigation
security.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

---------

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

plugin/plugins/dynamix.unraid.net.plg

@@ -134,8 +134,8 @@ done
 # Handle the unraid-components directory
 DIR=/usr/local/emhttp/plugins/dynamix.my.servers/unraid-components
 if [ -d "$DIR" ] && [ ! -d "$DIR-" ]; then
-  cp -rp "$DIR" "$DIR-"
-  echo "Backed up directory: $DIR"
+  mv "$DIR" "$DIR-"
+  echo "Moved directory: $DIR to $DIR-"
 fi
 
 echo "Backup complete."
@@ -204,12 +204,13 @@ exit 0
       
       # Handle the unraid-components directory
       DIR=/usr/local/emhttp/plugins/dynamix.my.servers/unraid-components
-      # certain instances where the directory is not present and others where it is, ensure we delete it before we restore it
+      # Remove the archive's contents before restoring
       if [ -d "$DIR" ]; then
         rm -rf "$DIR"
       fi
       if [ -d "$DIR-" ]; then
-        mv -f "$DIR-" "$DIR"
+        mv "$DIR-" "$DIR"
+        echo "Restored directory: $DIR- to $DIR"
       fi
       ]]>
     </INLINE>